Shaker arm



Dec. l, 1931. Ri F. DARBY 1,834,685

SHAKER ARM Filed Feb. 11, 1929 Patented Dec. 1, 1931 narran erasesPartnr orties ROBERT F. DARBY, F CHICAGO, ILLNOIS, ASSGNO T0 AMERICANSTEEL FOUNIDRIES,

OF CHICAGO, ILLINOS, A CORPORATION OF NEVJ JERSEY SHAKER ARM Applicationled February 11, 19.29,

rFhis invention pertains to grate assemblies, and more particularly toshaker arms associated With said assemblies.

In grate assemblies, particularly those ofl the table type, it is veryimportant to provide a shaker arm which Will satisfactorily perform itsWork. As Will be appreciated, the Whole grate assembly is subjected tohard usage with the result sometimes `that parts are broken and mustbereplaced. Heretofore dif'liculties have been encountered in selecting anentirely satisfactory shaker arm which n'nist be inexpensive and capableof being conveniently located in such a manner as Will not affect thestrength of the parts of the assembly nor the draft of the assembly inoperation.

lt is therefore an object of this invention to provide a shaker armseparable from the grat assembly, one Which is sturdy, readily appliedand one which fulfills all requirements of service and manufacture. ,Y

Linother object is to provide a shaker arm so constructed as to bereadily applied to eX- isting grate assemblies as Well as to speciallydesigned assemblies.

A further object is to provide a shaker arm for grate assemblies Whichmay be applied to the assemblies at convenient points along the lengththereof.

Still further object is to provide a shaker arm Which While adapted fora plurality of fastening means is yet arranged to be fastened as a rightor left through the same fastening means.

With these and various' other objects in view, the invention may consistofk certain novel. features of construction and operation, as .vill bemore fully described and particularly pointed out in the specification,drawings and claims appended hereto.

In the drawings, which illustrate an elnbodiment of the device andwherein like reference characters are used to designate like partsSerial No. 338,981.

Figure 1 is a fragmentary side elevation of a grate bar support, showingthe application of a shaker arm thereto;

' Figure 2 is a sectional top plan View of the assembly illustrated inFigure 1, the same being taken substantially in the plane as indicatedby the line 2 2 of Figure 1;

--Figure 3 is a sectional end elevation through the grate supportingframe, the same 'being taken substantially in the plane as indicated bythe line 3 3 of Figure 2;

Figure t is a fragmentary side elevation of a-different form of gratebar support, showing the application of a'modied form of shaker armthereto;

Figure 5 is a sectional top plan view of the modified form of shakerarm, the same being taken substantially in the plane as indicated by theline 5 5 of Figure 4l; and

` Figure 6 is a sectional end Yelevation through the modified form ofgrate supporting frame, the saine being taken substantiaL ly in theplane as indicated by the line 6 6 of Figure 5.

Referring first of all to the form of shaker arm illustrated in Figures1 to 3 inclusive, which shaker arm is adapted for use VWith a supportingframe of a grate bar structure wherein a single' longitudinal rib isutilized, this single rib 10 of the support is shown with the oppositelyextending transverse securing lugs 12, said rib 10 being provided Withlongitudinal spaced apertures 14. The

shaker arm is provided with a vshank 16,V

shown of substantially arcuate shape, the end thereof being providedwith an aperture 18 for the reception of actuating means, such as alink, and said shank terminates in a bifurcated head portion 2O providedwith upwardly extending jaws 22, each of said jaws eX- tending inopposite directions. being provided With sloping portions24, the planeof which intersects at the top 26 of the head', being so formed forfoundr-y purposes.A Each of said jaws is provided with an apertureadapted to register With the respective apertures 14 and to receivesecuring means, such as the rivets 2S, securely fastening said shakerarm to the frame, it bein understood that a base portion 30 oi' thebifurcated head may contact the bottom of the rib 10, providing atighter fit.

TWith this construction, wherein a plan of the aWs is substantiallyZ-shaped, it Will be seen that the shaker arm may be assembled for anyposition, that is, as either a right or left as desired, in spite of thefact that a plurality or" fastening means is used, one of said fasteningmeans being` used for each jaW.

Referring now to the modification illustrated in Figures 4 to 6, it Willbe seen that the supporting` frame 50 of the grate bar assemblycomprises spaced longitudinally eX- tending members 52 and 54, themembers 52 and 54 being provided With apertures 56 and 58 disposed onthe same level but in staggered relation to each other, The shaker arm60 is or any desired shape, such as arcuate, the shank G2 being providedwith an aperture 64 tor the attachment of an actuating means, such as alink, the opposite end of said shank terminating in a head portion 66provided with spaced oppositely extending lugs 68 and 70. The head ofthe shaker arm is sub stantially ZVv-shaped in plan, as shown in Fivure5, and each of the lugs is provided with apertures 72 and 74respectively adapted to register with apertures V56 and 58 wherebysecuring means, such as rivets 76, may be inserted into the registeredapertures for securing the shaker arm in operative position with respectto thevgrate assembly. As before, the disaosition ot' the lugs 68 and 70makesit possible for the shaker arm to be assembled with the grate baras a right or atleft as desired, though a plurality of fastening meansbetween the shaker arm and grate are used,

thus forming a very advantageous structure.

With the construction shown, it Will be ap'- preciated that a verycompa-ct and serviceable form of shaker bar and assembly is provided,and it is to be understood that l do not Wish to be limited by the exactembodiment of the device shown, which is merely by Way of illustrationand not limitation, as various and other forms of the device Will ofcourse be apparent to those skilled in the art Without departing fromthe spirit of the invention or the scope of the claims. p f

I claiml. In a grat-e bar assembly, the combination of a support havingspaced apertures disposed therein,l a shaker arm for moving saidsupport, said arm having spaced jaws tor embracing Aengag ,e1nent withsaid support, each ot said jaws being provided with an aperture adaptedto register with one of' said iirst named apertures, and securing meansdisposed through registered apertures.

:2. In a grate bar assembly, the combination ot a support having spacedapertures disposed therein, a shaker arm for moving said support, saidarm having members disposed thereon forming a substantial Z- shapedmember in plan View, said members being provided with apertures adaptedto register With said first named apertures, and securing means disposedthrough the registered apertures.

Signed at Chicago, Illinois, this 26th day of January, 1929.

' v ROBERT F. DARBY.

